BlackTreeCVE Intelligence
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Full vulnerability report · 2015
CVE-2015-0291High confidence

n/a: security vulnerability

n/a · n/a

5.0MediumCVSS 2.0
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2015-0304

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
01

What, why and how

The sigalgs implementation in t1_lib.c in OpenSSL 1.0.2 before 1.0.2a allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) by using an invalid signature_algorithms extension in the ClientHello message during a renegotiation.

What

The sigalgs implementation in t1_lib.c in OpenSSL 1.0.2 before 1.0.2a allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) by using an invalid signature_algorithms extension in the ClientHello message during a renegotiation.

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

An attacker operating through the affected interface may attempt exploitation when the stated preconditions are met. If successful, the issue may disrupt the affected service.

What

The sigalgs implementation in t1_lib.c in OpenSSL 1.0.2 before 1.0.2a allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) by using an invalid signature_algorithms extension in the ClientHello message during a renegotiation.

Why

The current structured CVE record identifies a security weakness, but the root cause requires confirmation in the linked vendor material.

How

An attacker operating through the affected interface may attempt exploitation when the stated preconditions are met. If successful, the issue may disrupt the affected service.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
the affected interface → vulnerable operation → disrupt the affected service
Attack surface
Unspecified
Privileges required
None: unauthenticated exploitation is possible
User interaction
Not stated in the selected CVSS metric
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Not stated in the selected CVSS metric
Weakness
?CWE means Common Weakness Enumeration.
CWE not yet assigned
CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
AV:N/AC:L/Au:N/C:N/I:N/A:P
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
UnauthenticatedDenial of service
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

Canadian Centre for Cyber Security · English · AV17-067Rockwell Automation Stratix 5900 security update

of service conditions. Affected software versions: Stratix 5900 version 15.6.3 EA and earlier CVE References: CVE-2016-6380, CVE-2016-6393, CVE-2016-6384, CVE-2016-6381, CVE-2016-6382, CVE-2016-6415, CVE-2016-1409, CVE-2016-1350, CVE-2016-1344, CVE-2015-7691, CVE-2015-7692, CVE-2015-7701, CVE-2015-7702, CVE-2015-7703, CVE-2015-7704, CVE-2015-7705, CVE-2015-7848, CVE-2015-7849, CVE-2015-7850, CVE-2015-7851, CVE-2015-7852, CVE-2015-7853, CVE-2015-7854, CVE-2015-7855, CVE-2015-7871, CVE-2015-1798, CVE-2015-0642, CVE-2015-0643, CVE-2015-0646, CVE-2015-0207, CVE-2015-0209, CVE-2015-0285, CVE-2015-0287, CVE-2015-0288, CVE-2015-0289, CVE-2015-0290, CVE-2015-0291, CVE-2015-0292, CVE-2015-0293, CVE-2015-1787, CVE-2014-3566, CVE-2014-3359, CVE-2014-3355, CVE-2014-3361, CVE-2014-3354, CVE-2014-3360, CVE-2014-3299, CVE-2010-5298, CVE-2014-0076, CVE-2014-0195, CVE-2014-0198, CVE-2014-0221, CVE-2014-0224, CVE-2014-3470, CVE-2014-2113, CVE-2014-2108, CVE-2014-2109, CVE-2014-2111, CVE-2014-2106, CVE-2014-2112 Suggested Action CCIRC recommends that system administrators test and deploy the vendor-released updates to affected devices per your change management policies. References: https://ics-cert.us-cert.gov/advisories/ICSA-17-094-04 http://compatibility.rockwellautomation.com/Pages/MultiProductDownload.aspx

Official advisory ↗
CERT-FR · French · CERTFR-2022-AVI-1094Multiples vulnérabilités dans les produits Siemens

.cve.org/CVERecord?id=CVE-2015-0207 Référence CVE CVE-2015-0208 https://www.cve.org/CVERecord?id=CVE-2015-0208 Référence CVE CVE-2015-0209 https://www.cve.org/CVERecord?id=CVE-2015-0209 Référence CVE CVE-2015-0285 https://www.cve.org/CVERecord?id=CVE-2015-0285 Référence CVE CVE-2015-0286 https://www.cve.org/CVERecord?id=CVE-2015-0286 Référence CVE CVE-2015-0287 https://www.cve.org/CVERecord?id=CVE-2015-0287 Référence CVE CVE-2015-0288 https://www.cve.org/CVERecord?id=CVE-2015-0288 Référence CVE CVE-2015-0289 https://www.cve.org/CVERecord?id=CVE-2015-0289 Référence CVE CVE-2015-0290 https://www.cve.org/CVERecord?id=CVE-2015-0290 Référence CVE CVE-2015-0291 https://www.cve.org/CVERecord?id=CVE-2015-0291 Référence CVE CVE-2015-0292 https://www.cve.org/CVERecord?id=CVE-2015-0292 Référence CVE CVE-2015-0293 https://www.cve.org/CVERecord?id=CVE-2015-0293 Référence CVE CVE-2015-1787 https://www.cve.org/CVERecord?id=CVE-2015-1787 Référence CVE CVE-2015-1788 https://www.cve.org/CVERecord?id=CVE-2015-1788 Référence CVE CVE-2015-1789 https://www.cve.org/CVERecord?id=CVE-2015-1789 Référence CVE CVE-2015-1790 https://www.cve.org/CVERecord?id=CVE-2015-1790 Référence CVE CVE-2015-1791 https://www.cve.org/CVERecord?id=CVE-2015-1791 Référence CVE CVE-2015-1792 https://www.cve.org/CVERecord?id=CVE-2015-1792 Ré

Official advisory ↗
CERT-FR · French · CERTFR-2015-AVI-259Multiples vulnérabilités dans les produits BlueCoat

De multiples vulnérabilités ont été corrigées dans les produits BlueCoat . Elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et une atteinte à la confidentialité des données.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2015-001886OpenSSL の t1_lib.c の sigalgs 実装におけるサービス運用妨害 (DoS) の脆弱性

OpenSSL の t1_lib.c の sigalgs 実装には、サービス運用妨害 (NULL ポインタデリファレンスおよびデーモンクラッシュ) 状態にされる脆弱性が存在します。 補足情報 : CWE による脆弱性タイプは、CWE-476: NULL Pointer Dereference (NULL ポインタデリファレンス) と識別されています。 http://cwe.mitre.org/data/definitions/476.html

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-4506OpenSSL 다중 취약점 보안업데이트 권고

NULL 포인터 역참조에 의한 서비스 거부 공격에 악용될 수 있는 취약점 (CVE-2015-0291)

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
n/a: n/a
Fixed
An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 19 Mar 2015 · Last source change 6 Aug 2024, 04:03 UTC · CWE not yet assigned

CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-09-01
European sourceENISA EUVD · EUVD-2015-0304
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceUnavailable
NVD statusNVD modified after enrichment

Missing structured fields: CWE classification. Missing data is not evidence of low risk; review the primary advisory.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Vendor guidanceAuthoritative vendor guidance changed from vendor advisory to authoritative remediation link · patch, vendor advisory.
    Before
    vendor advisory
    After
    authoritative remediation link · patch, vendor advisory
    af854a3a-2127-422b-91ae-364da2661108 ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    n/a · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    n/a · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    CNA ↗
  3. Remediation statusRemediation status changed from Awaiting fix to Patch available.
    Before
    Awaiting fix
    After
    Patch available
    af854a3a-2127-422b-91ae-364da2661108 ↗
  4. SeveritySeverity changed from Unknown to Medium.
    Before
    Unknown
    After
    Medium
    NIST NVD ↗
  5. CVSS scoreCVSS score changed from not recorded to 5.0 (CVSS 2.0 · NIST NVD · AV:N/AC:L/Au:N/C:N/I:N/A:P).
    Before
    not recorded
    After
    5.0 (CVSS 2.0 · NIST NVD · AV:N/AC:L/Au:N/C:N/I:N/A:P)
    NIST NVD ↗
  6. ENISA EUVD mappingEUVD-2015-0304 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2015-0304"}
    ENISA EUVD ↗
  7. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2015-0304↗Vendor advisory↗Patch or update reference↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2015-0291 · cve.blacktree.nl